Cloth-cutting machine.



D. PERLMAN CLOTH CU'THNG MACHINE.

APPLiCATlON men JUNE I5 1915.

Patented Jan. 18, 1916.

3 SHEETS-SHEET l.

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D. PERLMAN.

CLOTH CUTTING MACHINE.

APPLlCATlON FILED JUNE 15, I915. 1., 1 68,?8& Patented Jan. 18, 1916.

3 SHEETS-SHET 2.

DJPERLMAN.

CLOTH cu'mwc MACHINE. APPLICATiON FILED JUNE 15, 1915. N D 1 .1 68 F33 Patenied Jan. 1% 1,916

3 SHEETS-SHEET CLGTH-GUTTING MACHINE.

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Applieafion i'ilecl June To all 11.720212 may u na -W22:

Be it known that I, D. an Pr. amaze, a sulrieet 0f the Czar oil Ruseia, and, resident of New York, in the cnunty 0i? .llew York aml State of New York, ha im'entecl certain new and useful Iuiprrneinents in Cloth- Cutting Machines, of which the fella-Wing is a specificatien. I

lily iuventinn relates to certain imprevemen'rs in. clOlLh cutting inarhines anal more particularly to that type shmvn in my prior Patent 1.080.5l8, granted Deeen'iher In that Patent I have Shawn a machine ha v-- ing a circular knife acla 'f'eil to he L'Olifl'ilfiljl in cut. through a plurality of layers 01'. cleich at the same time aml I have shown certain at tachments for guarding and for'shawening The knife.

()ne of the main ()lIJ lECtS e'f my present in ventiun is'tn facilitate the cutting of all ell Hie superposed layers of the material to (the same distance so that the. end 01 the. cut will be straight from the to) in the hnttem. This is especially (lPSilzllDlC where the design includes a reilntrautangle. (W a ffmileif, or a point and is also (if img'x'irtance in. DQi ClIiYIQ; the ellgz'e.

Previu'us 11) my im'eniiion "a ape: i011 has been pearly performed by liking: up 'lihe cloth by hand when the top layer lire: been cut to the desired point, in mailer in lJFIZlfZf the lower uncut layer up he the n 11118.1 height (if the. lap layer. (lull; il'ien will he knife eut all of The la s in the same (lisfiance.

This operation p great (,li'iiwult v and danger meuler as the growls; muss point very elese to the sharp 15W of knife aml in Chung 5'0, he is liable to lta his hands in Contact with the lflll'liz}. especially dangerous X eu such an 0} is perlernual some (lintance away edge of the growls Whien neceflaita the eiu1- ier .ahoving' his hand under lvhe 930 a siclerahle distance: to lift ii up.

actual height: of (he r-irabh. anal provide posi- Speeificatiozz of Letters Eatenb.

In addition to being: exneseil 1' 0 iiiluriea L iieizii'eii Janfil 55.. 15915.

1915. SerieiNeE-(L 83.

tire and f-.'l!)1}'*l n'ie fhzmical means ihe g mcls and automatically lifting the guard as the goods are lifted and at all tin protest the operati'n-s hand from being cut .ch fur i er imperant object of my inveni-ion is to Jere eertain of the (llllieulfies' eneounereel. in grinding; the knife. in the beer. form of in aehines new in use, if. very (iii'licuhv for the cutter 0 ailljust the grinders so as to make a perfeeily sharp edge on the knife and furthermme. hie. sparks resuliing from the. grinding: ctinn a 1'1. liable to fire lo t-hi- ;zoecls if we knife is sharpened while i the em l3: alsa leaves the nowdared steel and sier a (last on the good; which iiianiages fine Win gtmda. i OVQZ'COIHB all of ihese difficult. by my un t-raved cm1- the eliu all the epera'mr has m (10 is in loeaen screw and mess down the grinder. The. la hr will an! an a9 lee M ia'lically SilkiG axially ice the p. quali y en- 0% the knife.

am a jpivei m in.-

sides i... hraeh en (1e 0:1 3 for if i in rmrnial. operaiimi,

t inprnper pesi 1 means of {the whiel tends: to hold liotl'i hri hes ah ways in the same .isifien.

A furi-lner ohjeci; of my 11""3l'1ilii11 is m loci; l'he. knife ,q'uar in position sn lhal, if. ea'nni'rb he. swung outwardly except lay the act f bringing the grinders inim poem-tin in 15 1 HUBER" sharpen the knife. At all other times the guard is so looked that it cannot be pressed aside either accidentally or intentionally. Furthermore, the guard will not sw ng asldc by the lowermg of thegrmders unless the cloth lifter be in lowered position.

My invention embodies various other its vven'tion, but I wish it particularly understood'that various other embodiments may be designed within. the spirit and scope of my invention as defined in the appended claims. I desire the particular forms shown infthe drawings to be considered merely as illustrative of the invention and not as limitations thereof.

' In these drawings, to which reference is to be made, and on which similar reference characters indicate corresponding parts in theseveral views, Figure 1 is a side elevation of a machine constructed in accordance with my lnventlon, the base thereof being shown in section and the parts in normal operating position; Fig. Q'Qis a transverse section taken in part on the l ne 2*2 of Fig. 1; Fig. 3 1s a vertical section taken in part on the line 3-8 of Fig. 1; Fig. 4 is a perspe ctive view of portions of some of the separated parts embodied in the guard lifting and locking mechanism;Fig. 5 is face View of certain of the parts shown in Fig. 4; Fig. 6 is atop plan view or the grinders and their support; Fig. 7 is a. face view or the grinders, brushes and their support; Fig. 8 is a face view of the cloth lifting mechanism; Fig. 9 is a view similar to a portion 4 of-Fig. 3 but on a very much enlarged scale;

Fig. 10 1s a face viewof a portion of the cam shown in Fig. 9; Fig. 11 is a perspective view of the grinders showing their relationship to the knife during the grinding operation; Fig. 1'2 is a view similar to F ig.

1, but showingv the cloth raising mechanism in elevated position to thema'ximum extent and showing the grinders, 1n \clotted lines, 111 grinding position; Fig. 13 1s \a view s1milar to Fig. l, but showing a modified form are of guard and grinder support, and Fig. 14 is a sectionaldetailof a part shown in Fig. 13.

I have illustratedmy invention as applied. to a type of cloth cutting machine in which there is a flat plate or base 20 adapted to slide on a table beneath thejcloth to he cut. This'base carries a standard 21 also in the form of a substantially flat plate having a bracket 22 at the upper end for supporting an' electric motor or any other suitable driving means.

The standardiZl has a stub-shaft 24: can

see es ryin the circular cutting knife 25 and a have od gear 26 rigid with said knife; A

shaft 2'? extends downwardly through the bracket 22'from the electric motor and carries at its lower end a. pinion 28 meshing with the gear 26 to rotate the knife in a vertical plane whenthe motor is running. The lower edge of the knife extends into a slot 29in the base 20 and this base has an inclined upper surface for permitting it to easily slide beneath the cloth and permit the latter to ride over the upper surface of the base and up an inclined guide member 3G to the edge 01" the knife.

The parts so far described in detail do not, by themselves, constitute any portion of my present invention as they are shown in very similar form in my prior Patent No. 1,080,518.

"Iii

.Ttwill be noted that as the knife is circuiar and rotates in a vertical plane, the oper ation of the cut-ting edge of the knife at the elevation of] the axis is farther'in advance than any otheri part of the cutting edge. Therefore, as the machine, as shown in Fig.

l, is pushed toward the left and as the large the end-oi the line or it is desired to turn a sharp angle, or it is desired to notch the goods, it is import-ant that all of the layers he cut through to the same distance. As has been previously pointed out, this has been done by the operator who inserts hishand beneath all of the layers and raises up the goods adjacent to the cutting edge of the knife so that the lower layers will come to the elevation previously occupied by the upper layer. It is not'necessary to raise them to the height of the axis of the knife as the goods will bend and will be presented at an acute angle to the horizontal.

In myimproved construction I provide a device for mechanically lifting the goods at this point so as to avoid the necessity of the operator bringing his hand adjacent tothe cutting edge. This device is shown separate from the machine in Fig. 8. The lifting device in the form shown is a curved plate 33 of a diameter a little larger than the diameter of the knife. The plate is set into an annular recess in the face of the standard or frame 21 so that its outer surface lies substantially flush with the outer surface of said frame and thereby permits the knife to lie closely adjacent to the frame asshown particularly in Figs. 3 and 9. To I meager;

sides of the lifter are beveled so that the lifter has a comparatively close lit in the recess or groove, but may be inoyed endwise Within the groove as desired. With the parts in the normal position, the operating end 3-l of the lifter normally lies substantially flush irith the upper surl ace of the guide 30 so that the cloth may readily pass over the end of the lifter. lVhen it desired to lift the goods, the lifter is moved endwise, that is, circuinierentia'lly of the ting edge of the knife to the desired distance.

In. Fig. 12 I have shown the litter in maximum raised position although it is not on dinarily essential that the lifter have as great a range of movement as is shown.

The upper end of the litter is preferably of somewhat greater Width than the lower end and includes a plate portion to which is attached the base portion 3611i an operating handle 37. By moving this handle downwardly and rearwardly, for instance from the position shown. in l to the position shown in Fig. 152. the litter is given the desired movement. The lower rear edge of the knife is normally protected by a flange 38 formed integral with the staiidard 21 in order to permit the operation of the lifter and to protect the upper part of th rear edge when the lifter is in normal posi tion. I I out away the upper portion oi this flange and provide the lifter 33 with a flange 39 standing out substantially at right angles to the plane of 'l'uoven'ient of the litter and disposed closely adjacent to the peripla ery of the knife. This flange 2-39 telescopes inside of the flange 38 when the litter is operated as shown in 1* lg. 12 and it in ell'ect forms an upper extension of the liangge 3 to protect the upper edge of the knife when the litter is in normal positioi'uas shown in Fig. l. The upper end of the flange 38 may. l'l desirell. constitute the stop with which the handle 37 engages. to limit the movement of the litter in one direction, shown in il 12, While inoi'emei'it n the opposite diiel. ion may be limited by a stop or pin l0 on the frame, as shown in Fig. '13. ()ther forms of stops may be employed or they may be omitted.

It is not essential that the litter be of the specific form shown in the drawings as it is evident that any means normally disposed beneath the cloth, closely adjacent to the cutting edge oi the knife and adapted to be raised and follow, or approximately follow. the cutting edge, may he used for the purpose. For instance, the body portion of the lifter 33 might be in the form of a wire rather than the flat plate with leveled edges as shown. It the guiding groove or recess pertion which above the cloth 1 provide a guard which I automatically raise as the goods are raised. This guard may assume various different forms, two of which 1 have illustrated in the accon'ipanying drawings. in the specific form shown in Figs. 1, 5 and 19,. the guard is in the form of a curved plate 42 extending downwardly and forwardly along the eiflge of the knife from the upper side approximately to the level of the top of the goods. This plate has a lian e l3 extending across the edge of the knite as shoun particularly in Fig. 9. The ange may, if desired, enter a correspond mg groove n in the outer surface of the plate portion 35 ot the litter. This is shown particularly in Figs. 8 and S). The plate adjustable ci 'ciuntorentially of the knife ll; order to adjust it to ditlerent thicknesses of goods. The plate is preferably carried by a plate 5. the two being connected hy two pins or studs ll carried by the. plate as and exteinlinn' through a slot ll in the plate 22. These permit the end Wise movement of the plate l2 in respect to the plate if). it is not ordinarily necessary to provide any locll'ii'ig means for l'iolding the two plates in the desired adjusted position as I may employ a very thin, flat plate spring l8 (:minecting the inner ends of the two studs 46 and having its center portion resil" tl' pressing agziinst the inner surl aoe of the plate 2. This spring need be hardly thy-her than a sheet of luistol-board and by its resilieniry will iti'ictionally hold the Plath-u and in the desired adjusted position.

in order to :uzton'iatieally raise the gun-rill as the litter rails d. and thus prevent the guard om interltrin g with the free upward niovonmnt of the rooms. l connect the plate 25 to the plate pi; tion 35 of the l ter so that the guard will n'l'ore circunr ercntially oi the ltni'l'e at he same time and to the some extent as doesthe lifter. lo pe 'init t aid to be swung; laterally away from the lillll'l and to thus peri'nit the lil'll. e to be cleaned. adjusted ground or removed. l pirotally connect the parts. is shown.

I the base portion ll; of the handle 37., which tratcd. these two menilmrs have pintle sleeves formed integral therewith to receive a pin- ,tle 50. coil spring 51 encircles the pintle and normally golds the guard in position and normally .I'QElStl the swinging of the gua rd outwardly from the pelt-ion shown in frame or standard opposite to the knife and adapted to be swung in a vertical plane. As shown, theframe has a rearwardly extending stud or stub shaft 55, shown particularly in Fig. 2, upon which this lever is mountedand encircling the stud is a coil spring normolly holding the lever in the position in dicated in Fig. 1. This lever has a portion adjacent to the main hamlets of the machine, while the opposite extremity of. the

' lever is designed to carry the grindershere machine is a pin 60, one end of which isinafter described. Pivotally mountedrupon the standard 21 and beneath the motor sup.

porting bracket 22 is acam lever 57, shown on a greatly enlarged scale in Figs. 9 and 10. This pivoted cam lever 57 is normally swung outwardly to the position shown in dotted lines in Fig. 9 by a small spring 58,.

or by any other suitable means. I The outer surface of the cam, lever lies in the path of movement of the lever 5% which latter may, if desired, carry an anti-friction roller 59. The lever 5-1! and the cam lever 5'7 are normally in the position shown in dotted lines Projecting through the frame 21 of the adapted to engage with the pivoted guard and the other end of which is adapted to be operated by the cam 57. The point or pressing end of the pin normally lies sub stantially flush with the inner surface of the groove or recess in which the plate 35 travels and it may be withdrawn to; this position by any suitable form of operative connections between the pin and the cam lever. Merely by way of example; I have shown the pin provided with a transversely extending head 61, slidable in a T-shaped slot 62 in the face of the cam lever 57 so that as the latter is swung to the position shown in dotted lines in Fig. 9, it will automatically withdraw the pin, to inoperative position. As the lever 54 is depressed, the roller travels along the outer cam surface of the cam lever 57 and swings the latter toward. and to the position shown in solid lines in Fig. 9. This forces the pin endwise to the position shown in solid lines in Fig.

'9 and the engagement of the point of the pin with the guard below the pintle 50 of the latter, swings the guard out to the position shown in solid lines-in Fig. 9.

The specific proportioirof parts shown in Fig. 9 need not be followed as the proportions may be changed to secure greater or lessrelative movement of the parts. It is only essential that the swinging do ;n-

tion; the pin preferably engages; not merely with the inner surface of the plate 45, but

preferably engages inthe angleof intersection between said plate and :3. lug 63 on the face of said plate. As theplate approaches a horizontal position, thepressure' will be against the side of timing instead of along y the surface of the late.

As an important eatureof my invention,

I provide means for normally locking the guard in operative position and automatically unlocking itas'the grinders are'moved toward the edge of the knife. The guard is normally held in the position shown in Fig.

1 by any suitable form or arrangement of springs 65 and when in this position, the

pin 60 comes into proper position in re ect to the lug 63. Sp

To reach thelug it is neces- Sary to pass through the P1at 5-0f cloth lifter and in doing so it unlocks the guard and permits it to swing about the pintle and \in respect to the cloth lifter.

As shown particularly in Fig. 4, the plate 35 of the lifter has a recess 66 in one I end inwhich is mounted a slide 67, the slide being of substantially the same thickness as the plate and held in the plane of the plate, and against all movement except an endwise movement bv the heveling of the edges of the slide and recess. Of course any other means 'might be employed for positioning and guiding the slide. The slide is held inwardly to the limiting extent in the re cess by any suitable form or arrangement of spring 68. In the form shown in the drawings, this spring is in the form of a coilmounted in a pocketin the plate and having a free end for engagement with .a

groove 69 in the outer end of the slide. The

slide and the recess at their inner ends have opposed grooves 70 defining a small passage through the plate and of smaller I diameter than the pin 60, and disposed in alinement with the pin when the cloth lifter is in lowered or normal position. The slide 67 has an under-cut'lug 71 on the outer face thereof adapted to engage beneath a shoulder or flange 72cm the lug 63 so that the engagement of ,the lugs 71 and 63 normally prevents the outward swinging of the guard. Upon lifting the free end of the lever 54.; the cam lever 57 is swungdown- 'w ardly and inwardly and the point of the pin enters the grooves 70 and forces the slide outwardiyagainst the action of the spring '68. This clisengages the lug 71 from. the lug 63 and thereby unlocks the guard. A Further rnjin'oinrnt of the pin 60 Swings the guard upwarilllv as abo e iluncrihed.

Tho lrrrr 5i at one (lltl oarriea the grinders and the swinging of this lever servos to first. swing the guard away from the knife Bilge and to later bring the irrinilrrn to the knife edge. This timing of the oporation in part sorurotl hf, thrpurtioular ourvataro oi the outer or oain fans of tho lo er 53'. it will ho noted, particularly 'lroin Fig.5. 9, that tho lower portion of this outer face is substantially parallel to the direction of nioveinont of the have after the (1am over 537 has horn swung to final position. in other words. (luring the first part of tho ilrwvnwartl movnnn-nt of the lever 5i tho rain lrvor 57 and guard swing thr ng; the-ii nuixinium inoveinent and the. 'l.' wn\var l movement of the lever J-l lions not, inatrriallv all'rirt the position of tho (rain lover 57 or the guard.

The grinder is prnfvrahl in the form in two rircular atoms 77 apart-(l a slight tllS tans: apart to permit tho onlrv of tin. knito fill" tin-ri lwtwrrn. Tho two stonrs are ttrr arr iron to rotatr on a supporting pin shaft 71'. 'llu- .lh'lH of tho latte are linlil till! rials of tintwo llllllltfllth' of a yokr. Tu. it: shown. tho pin or vshalt ii ie; in tho 'loriu oia holt. ono rnil having a slotted lnriul and the othr-r curl hr-inn thrwulorl to malaria it in tluvolun and neither rn l pro ji-otwl our ,hovozul tho yokr: to any (fonssiih ii'il llt. oxtont. l'lach stone has a. horipharal wall and an out} wall so as to lravi a rhanr hvr thoroin. it is the \llll walls which are (-lanipoil on thin-airmen Y6. l niaji amt prolvmlilv -lo [HUYlll-C. carh alcove with a flange at its outer oiul tor onn'agruiont with tho uirr :uu'lar'r of tho L'lHl wall oi tho onv. :sn l a nut throaih'il along the luulv portion 'lflllllnll on two swarato sleeves T which .Hl ngag'inir with the innnr surface? in tho l i null. (l lo? two HlLl'K'Qn', hy ahntting. li2.., th n oviunnnt of tire. stool-s toward va h otlxor. i 7.

ia :1 important 'l a'turv. l utilixo tho opnosiu'l tu ns of the two stonrs as tho grim inn; surl aws rathor than using this periphorr oi um stones. 'l'ho yoko T8 is pivotalv uupportril on a bracket '7! and tho nxn'ln-t anil Yoko are ])!(1\'l(l(ll with uxtnoiom in our of which thorn in a groovvzl slot Rt) am! in tin other of which tlu-rr is a arrow Hl so tha t-lio olanip and tho atoms oarriwl Lliori-lrv '|na v he swung about tho pivotal i-iinnm-tion R2 and thus rotatr in pianos at a s o hl; angle to tho piano of-tho plate. ll tho) are rolati'il in tho Hilllll plane. it is viih-ntt lhat ni'ithor stono wouhl rngaoo with tlufwlno ol tho knil'o it tho utonos worn pro'porl vspar-oil axially. hut hi2 spacing the.

utwmon a -lilli iliutanrr apari 1am! lo; than.

loosened and the stones tilteilto a greater extent so as to insure the proper migrant ment or the. stones with opposite sides of the knife. This is the only adjustment which is ordinarily necessary (luring the length of the lifr of the stones. ing the stones, it is necessary that the space hetween them be. properly centered in respect to the plane of rotation of the knife. To nor-urn this, i connect the h 'acket 79 to thelever in such a way that the stones may he adjusted in thrilircction of their axis. As shown particularly in Fig. (3, the lever has an and nirtion 83 extonrling subutantiail v puralltl to the axis of the knife, and tin-t. hraoket. T9 ha'si'a slot 8i receiving a square sturl '85 anil'a clamping screw 8.). By loosrningj tho arrow, thr bracketmay be adjuatrrl lrngthwim or the and port-ion 83 of the lover and the space between tho two stones properly centered in respect to the knife. u

"The stones normally or-rupy a raisoil position away from the knife aml above. the "ll211'(l as is shown in Fig. 1 although in artual prurtirin I prefer to vary the proportions of tho parts so as to hrin; the. atoms i-louvr to tho motor support. and closer to tho knitr. i have shown thmn in tho proportion shown in Fig. i for rlournvus unil to aroiil ronl'usion in tho drawing. l have shown thorn morn nearly in tho ilvsirril po sition in Fig. lil whirh involves a inoililie l form of guard and Quaril oprrating int-ulna. l havo also shown the grinilrrs of a slightlv larg r nil r tl an it might. ho t'ounil ilvr irahlo to i-luploy. in orilor to pri'vrnt tho grimlora 'l'roiu living prenatal on to tho knilr to HlH'll an oxtrnt that \vhrn tho rinilors are worn away lihr knife run ronio into rontart, with tho axle or other supporting parts of the. grinder, l may provide any suitable Form of stop. This stop may, if desired, ho Qonstrurtiul as a part of tho rain lovor 57 although an; othri' (l)llSlLlll(,'.i,lUll o't stop might ho oniplovoil lllltltl' varying l'l'HUlltlonn: 'ilue ('illll lover 5? is shown as having a short rxtrnsion' 89 against whirh the lover frimay abut whrn at tho ilesiroil lower limit, of its; nioronu-nt.

.As an important. foal-urn. of my invention, I

i provi lo means for collecting thogriniling :etono (lust and lino stool partirlan resulting in originally mount- Q weaves ing lever and curve the end of each arm so that it substantially follows the contour of the grinders. Each of the two arms carries a brush 91 and the two brushes are so disposed as to engage with opposite surfaces of the knife while the grinding operation is going on. In fact, the two brushes may directly contact and the knife may enter between and spread them slightly apart. The brushes are preferably formed of material which is non-combustible and are so constructed that they are not readily cut by the knife. A. preferred form is to make the inner portion of each brush of asbestos fibers and malre the outer layer of each brush of very fine wires. To hold the brushes in position but at the same time to permit them to be readily swung outwnrdly as'shown in dotted lines in Fig. 7, I connect each brush arm 96 to the side of the lever part 83 by a. pivot pin 92 and provide angular surfaces on the brush arm for direct engagement with a spring The spring in pressing against the Hat end of the sum, tends to hold the arm and the brush in the position shown in i3 7, but the two brushes may be readily swung away from each other and against the tension of the springs and may be held temporarily in such spaced. relationship by the pressure of the springs on another face or angle at the end of the brush arm.

It will be noted that the brushes are connected to the lever end 83 entirely inde pendently of the supporting or adjusting means for the grinding stones. The brushes are so set that the meeting edge of the flexible or fiber portions arein the plane of the cutting edge and as the brushes move in a plane parallel to the plane of the knife, no adjustment of the brushes is necessary. It is merely the grinders which need to be initially adjusted axially to bring the line be tween them into the plane of the cutting edge, and readjusted from time to time to restore this condition incase one stone wears away faster than the other. The stones are never adjusted toward or from each other but as they wear away equally, they aretilted or swung to a greater extent about the pivot In the -1 crcgoing description of the specific form illustrated in Figs. 1 to 12 inclusive, l have indicated certain alternative arrangements and have eniphasized the fact that other specific means might be employed for accomplishing various minor desirable results. I do notwish to be understood as in any Way limiting myself except as required eiiiJhe meinber aunts by the prior art, as various other changes may be made.

In Figs. 13 and 1%, stantially grinders, or grinder support as that heretofore described but I have illustrated a different form of guard. This guard is in the form of a channel shaged bar 95 vertically movable within a channel shaped guide 96 connected to the upper part of the machine I have illustrated subby a bracket 97. The guard is-thus mounts ed directly on the machine instead of on the cloth lifter. F or simultaneously raising the guard and the cloth lifter, I provide a lever 98 pivotall connected to a bracket 99 on the frame of the machine or to any other suitable supporting part. The opposite ends of the lever are connected to the cloth lifter and to the guard. As shown, the lever has a slot 100 at one end receiving a pin 101 on the cloth lifting lever 3'7, while the opposite end is provided with a slot 10?. receiving an adjustable connecting member 103 carried by the guard As shown, this connecting member 303 is in the form of a bolt with a projecting head adapted to permit it to be readily turned by hand. Within the channel member 95 is a non-rotatable nut 104 adapted to engage with the inturned edges of the channel member constituting thdguard .95. 5y tightening this connecting member, the nut is forced against the flange while the end against the web part of the chefiinel and theineinber is thus rigidly connected to the guard. At the same time, it may freely slide within the-guideillfi. The

guardis easily adjusted to different thicknesscs of cloth by loosening the bolt and sliding the guard trrthe desired position. -In Fig. 13, have shown the guard at a some what greater distance from the edge of the knife than would ordinarily be employed in practice. It is desirable to bring the guard as close to the knife as convenient so as to reduce the liability of the operator bringing his hand accidentally into engagement with the cutting edge of the knife; The lower end of the guard may be made in any suitable manner to prevent it from catching in the cloth. As shown it presents a curved surface constituting a shoe 105. The form of this may be varied at will. p

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is: 1

l. The combination with a circular knife, of a cui'ved cloth lifting member disposed adjacent to the periphery thereof and movable circumlerentially to vary the elevation of the goods in respect the axis of the knife.

2. The combination with a circular knife and a'support therefor, of a curved cloth lifting member carried by the support and movable circumferentially, the said member the same form of cloth lifter,

iitl

having a radius of currature slightly larger than the radius of said knife.

3. The combination with a circular knife,v of a support therefor, disposed closely adj acent to one surface of the knife and having a curved recess in the face hereof toward said knife and opposite the cutting edge of the latter, and a member disposed within said recess and nu1 vable along said one extremity of said member beii adapted to engage with the material to be cut to vary the elevation of the latter in respect to the axis of the knife.

i. The (mnibinatiou with a circular knife, of a support therefor, and a curved member supported. and guided by said knife support and movable along a path approximately following the cutting edge of the knife, one extremity of said member being normally disposcil beneath the path of movement of the material to be cut and when operated, serving to lift the goods along the cutting edge of the knife.

5. The combii'iation with a circular knife, of a member supported imlependently thereof and movable along the periphery of the knife, one portion of said member projecting out radiallv beyond the edge of the knife and presenting a cloth lifting surface and an other portion of said member extending transversely across the cutting edge of the knife and constituting a guard for the latter.

3. The combination with a circular knife, and a support therefor, of a device secured to said support, one extremity of said device presenting! a cloth lifting surfaceaml another portion of said device constituting a guard for the exposed portion ofthe knife above the cloth.

7. The combination with a circular knife. and a support therefor. of a device secured to said support. one extremity of said device presenting a cloth lifting surface iuid an other portion of said device constituting a guard for the exposedportion of the knife above the. cloth. the said guard being adjustable toward and from the extremity of the cloth lifting surface.

H. The combination with a circular knife,

and a support therefor, of a device secured to said support, one extremity of said device presenting a cloth lifting surfacoand another portion of said device constituting: a guard for the. exposed portion of the knife above the cloth, the said guard being adjustable towm'd and from the extremity ofthe cloth lifting surface and along the cutting ei e.

'lhc combination with a circular knife, of a curved cloth lifting member movablealong: the periphery of the knife, and a u'uard member secured to said clotlrliiting iuembcr and adjustable cireiunlerentudly of the knife and in respect to said cloth lifting member.

10. The eomi'iination with a circular knife, of a curved cloth lifting member movable along the-periphery of the knife, and a guard member pivotally secured to said cloth lifting member and adjustable circiiii'ifeientiiilly of the knife and in respect to said cloth lifting member.

11. The combination with a circular-knife, of a curved cloth lifting member movable along the periphery of the knia guard member pivotally secured to said cloth liftmg member and adjustable circumferentially of the knife and in respect to said cloth lifting member, and manually operable means for swinging said guard about the pivotal connections between the latter and said cloth lifting member.

1:2. The combination with a circular knife, of a guard, a support therefor mounted to move circumferentially of the knife, and frictional sliding connections between said guard and said support. I

13. The combination with a circular knife, of a guard, a support therefor mounted to move circuinferentially of the knife, frictional sliding connections between said guard and said support, and means for swingii'ig said guard and support outwardly away from the knife and independent of any circumferential movement.

1 t. The combination with a circular knife, of a guard, a support therefor mounted to move circumferentiall v of the knife, sliding connections between said guard and said support, and means for swinging said guard and support outwardly away from the knife and inde iendent of any circu1nferential movement.

15. The combination with a circular knife, of a r member movable along aeurvedpath approximately following the cutting edge of the knife, a plate pivotally secured to said member about an axis approximately tangential to thecutting edge, and a guard carried by said plate.

10. The conibination with a circular knife, of a membermovable along a curved path approximately following the cutting edge of the knife, a plate pivotally secured to said member about iln'axis ap n'oxinmtidy tangential to the cutting edge, and a guard car ried by said plate and adjustable circumfercntially of the cutting edge and in respect to said plate and said member.

17. The combination with a cloth cutting knife, of a cloth lifter normallydisposed below the path of movement of the cloth, and a knife guard for the exposed edge of the knife above the cloth, said lifter, cloth and guard being movable upwardly simultaneously.

18. The combination with a cloth cutting knife, of a cloth lifter normally llSll( -Sfiti below the path of movement of the cloth,

aknife guard, for the exposed edge of the iso knife above the cloth, and means for simultaneously raising said lifter and said guard to approximately the same extent.

19. Thecombinationwith a circular cloth cutting knife, ofa cloth lifter normally disposed below the path of movement of the cloth, a knife guard for the exposed edge of the knife above the cloth, and means for simultaneously raising said lifter and said guard to approximately the same extent. 1 20. The combination with a circular cloth cutting knife, of a cloth lifter normally disposed below the path of movement of the cloth, a knife guard for the exposed edgeof the knife above the cloth, and means for simultaneously. raising said lifter and said guard.

21. Thecoinbination with a circular knife,

of a guard for a portion of the edge of the knife, and a curved member movable along a curved path approximately following the cutting edge of the knife, one end of said member presenting a cloth lift ng surface, and the opposite end of said member constituting a support for said guard.

22. The combination with a circular knife, of a cloth lifting member movable upwardly along the cutting edge of said knife,

aguard disposed above and spaced from said liftingmember and also movable 'upwardly simultaneously with said cloth lifting member, and means for guiding said guard and preventing movementthereof toward and from the knife.

23. The combination with a circular knife,

, of a cloth lifting member movable upwardly along the cutting edge of said knife, a guard disposed above and spaced from said lifting member and also movable upwardly, and operative connections for moving said member and said guard simultaneously.

'24. The combination with a circular knife, of 'a;support therefor, a guard carried by said support, and means for moving said guard along a curved'path approx mately following the cutting edge of the knife and independent means for swinging said guard away from said cutting edge. l 25: The combination with a circular knife, of a support therefor, a guard carried by said support, means for movlngsaid guard along a curved path approximately Yfollowing the cutting edge of thekmfe and independent means for swinging said guard away from said cuttmgedge, and lock ng means normally preventing said swinging movement.

26. The c .:mbination with a cloth cutting knife, of a guard pivotally mounted to swing iuvwardly and from the cuttu ig edge, locking means for normally preventing said 1 swinging movement, and means forsimulknife, of aguard normally disposed adjacent the cutting edge and adjustable along. said edge, a pivotal support for said guard permitting the latter to be swung. toward and from said cutting edge, means for normally locking said guard against swinging movement, and means for swinging said guard.

28. The combination with a cloth cutting knife, of a guard normally disposed adjacent the cutting edge and adjustable along said edge, a pivotal support for said guard permitting the latter to be'swung toward and from said cutting edge, means for normally locking said guard against swinging support and normally preventing movement about the pivotal connections, and -means operating to unlockthe guard and swing the same upwardly when the guard support IS in a"predetermined position circumferentially of the knife.

30. The combination with a circular knife, of a guard, a support movable along the cutting edge, pivotal connections be tween the guard and the. support, a slide carried by said support and having locking engagement with said guard, and a member movable, to first move the slide to inoperative position and then swing theguard in respect to the support; 31. The combination with acircular knife, of a guard, a support movable along the cutting edge, pivotal connections between the guard and the support, a slide carried by said support and having locking engagement with said guard, and a pin movable endwise to first move the slide to inoperative position and then swing the guard in respect to the support;

32. The combination with a circular knife, of a cloth lifting member, a guard for the knife edge, a pivotal support for said guard, and means for swinging said guard about its pivotal support, said means being inoperative save when said cloth lifting member is in a predetermined position.

The combination with a cloth cutting knife, of a cloth lifter, a knife guard. movable toward and from the cutting edge, and

means for moving it away from the cutting 34. Thecombination with a cloth cutting knife, of a guard, a support therefor, pivotal usages connections between said guard and said support, means for moving said support in respect to said knife, a pin movable endwise into engagement with said guard to swing it about its pivotal connections with its support, the movement of the support from a predetermined position in respect to the knife serving to render said pin inope ative The combination with a circular knife, of a 'pivotally supported guard, a pin movable endwise for swinging said guard about its pivotal support and away from said knife, a cam lever engaging with said pin, and a grinder operating lever movable along'one side of said cam lever to swing the latter. i

36. The combination with a circular knife; of a support therefor, a pimmovable back and forth through said support, a gceiird for the cutting edge of the knife and movable to inoperative position upon the endwise movel'nent of the pin in one direction, a cam lever pivoted to said'support and engaging with one end of said pin, a second lever pivoted to said support anddiaving engagement with said cam lever;- and grind ers carried by said second mentioned lever whereby the movement of sai'dsecond mentioued lever in one direction moves said cam lever and pin to move the guard to inoperative position and simultaneously brings the grinders into engagement with the knife.

37. The combination with a circular knife and a support therefor. of a lever pivoted to said support and having a terminal portion substantially parallel to the axis of the knife. a pair of circular grinders spaced a slight distance apart and between which the edge of said knife may enter, and means for sin'mltaneously adjusting the two grinders along the terminal portions of said lever to bring the space between the grinders into the plane of the cutting edge.

The combination with a circular knife and a support therefor. of a lever pivoted to said support and having a terminal portion substantially parallel to the axis of the knife. a pair of circular grinders spaced a slight distance apart and between which the. edge of said knife may enter, means for sirmlltaneously adjusting the two grinders along the tern'iiual portion of said lever to bring the space between the grinders into the plane of the cutting edge. and

means for pivotally adjusting said grinders snnultaneously about an axis at right angles .to their axis of rotation.

3!). The combination with a knife. of a substantially U-shaped holder. two members rotatably supported therein and held against relative axial adjustment. two grinder stones carried by said members and spaced a short distance apart to permit the entry of the knife edge therebetween, and means for adjusting said holder and stones about an axis substantially at right angles to the rod, said axis lying in the plane of the knife.

l0. The combination with a circular knife, of a substantially U-shaped holder, a rod connecting the extremities of said holder, two sleeves mounted on said rod and having their ends abutting, two grinder stones -arried by said sleeves and spaced a short distance apart to permit the entry of the knife edge therebetween, means for adj usting said holder and stones about an axis substantially at right angles to the rod, sa d axis lying in the plane he knife. and means for adjusting said holder in a direction parallel to the asi of the knife. 41. The combination with a knife. of a pair of circular grinding stones spaced apart to receive the edge of the knife therebetween, and a pair of brushes disposed adjacent the opposite sides of said knife below the points of engagementwith said'stones.

4-2. The combination with a knife, of a pair of circular grinding stones spaced apart to receive the edge of the knife therebetween, and a pair of dust-collecting brushes adjacent the opposite sides of said knife below the points of engagement with said stones.

i3. The combination with a knife. of a pair of circular grinding stones spaced apart to receive the edge of the knife therebetween, a pair of brushes disposed adjacent the opposite sides of said knife below the points of engagement with said stones. and means for adjusting the position of. the stones in respect to the knife and independentl y of the support for the brushes.

ll. The combination with a circular knife, of a pivoted lever. a pair of brushes carried by said lever and adapted to engage with opposite sides of the knife. and a pair of grinders independently carried by sai ever and adapted to engage with opposite sides of the knife.

The combination with a circular knife. of a pivoted lever. a pair of brushes carried by said lever and adapted to engage with opposite sides of the knife. a pair of grinders iudepcmlenllv carried by said lever and adapted to engage with opposite sides of the knife. and means for adjusting said grinders in respect to said lever.

it The combination with a circular knife.

of a pair of brushes. a pair of grimling stones. a movable supporting member carrying said brushes and stones for bringing them into operative position in respect to the knife, a clamping device for holding said stones in predetermimal adjustment in respect to said member, and resilient means 'forretaining said brushes in pre-determined relationship in respect to said member.

47. The combination with a circular knife. of a grinder for sharpening the knife and a brush for collecting particles resulting from the grnn'hng action, said brush including asbestos fibers.

l8. The combination with a circular knife,

of a grinder for sharpening the knife, and a brush for collecting particles resulting from the grinding action, said brush including asbestos fibers and fine protectingand supporting wires.

49. A. cloth cutting machine having a circular knife rotatable about a horizontal axis, grinders movable into or out of engagei'nent with the knife and spark arresting means operatively disposed adjacent to said grinders.

50. A cloth cuttingmachine having a circular knife rotatable about a horizontal axis, grinders movable into or out of engagement with the knife and spark arresting means opcratively disposed below said grinders.

51. A cloth cutting machine having a circular knife rotatable about a horizontal axis, grimlers movable into or out of engagement with the knife, and spark arresting neans operatively disposed below said grinders and upon opposite sides of said knife.

52. A cloth cutting machine having a supporting plate adapted to move beneath the goods to be cut, a standard carried thereby, a circular knife carried by said standard and having its lower edge projecting into said supporting plate, a grinder normally disposed above said knife and movable downwardly into engagement with the upper portion of the cutting edge above the goods, and means disposed between the.

goods and said grinder for preventing the )assagc of dust particles or sparks from the grinder to the goods.

53. A clcth cutting machine including a supporting plate, a standard carried thereby, a circular knife mounted on said standard and havingthelower edgeprojecting into said suppmting plate, a lever pivoted to said standard, a grinder carried by one end of said leveand movable into engagement with the knife upon the swinging of the lever and spark arresting means disposed between said grinder and goods disposed upon said supporting plate and-adjacent to the cutting edge.

5- A cloth cutting machine having a circular knife, means for raising the cloth at a point adjacent to the cutting edge of the knife, means for sharpening the knife at'a point directly above said cloth raising means, and means for preventing the operation of said sharpening means when said cloth raising means is in raised position.

A cloth cutting machine including a circular knife, a handle for advancing the knife, means for varying the elevation of the cloth in respect to "the axis of the knife, said means having a manually operable portion adjacent. to said handle, a knife sharpener, a lever pivoted intermediate of its ends and having said knife sharpener supported at one end and having the opposite end disposed adjacent to the said handle,

and means for preventing the n'iovement of 7 and a lever pivoted to said support. and having one end disposed ad acent to but below said handle, and having a knife sharpening device movable into engagementv with said knifeupon the movement of said first mentioned lever end upwardly toward said handle.

57. A cloth cutting machine including a support, a knife carried thereby, a handle for advancing said knife and support, a lever pivoted to said support and movable in a vertical plane, one end of said lever being disposed adjacent to said handle and the opposite end having a knife sharpening device carried thereby. I

58. A cloth cutting machine having a knife, a lever pivoted to swing in a plane parallel to the plane of the knife, grinder holder secured thereto and adjustable about an axis lying in the plan of the knife, a pair of spaced grinders carried by said holder and movable into engagement with opposite surfaces of the knife upon the swinging of said lever and a pair of dust and spark collectors carried by said lever and movable .intopositions upon opposite sides of the knife and below said grinders upon the swinging of said lever.v

5!). A cloth cutting machine having a .knife, a standard for supporting the same,

a movable member secured to said standard. a grinder holder carried by said member, a pair of grinders carried by said holder adapted to occupy positions upon opposite sides of said knife uponthe movement of said member in one direction and a pair of dust and spark collectors secured to said member independently of said grinder holder and adapted to occupy positions upon 'opposite sides of said knife and below said brushes independently carried by said memher, one brush and one grinder adapted to li at each side of said knife upon the movement of said member to operative position.

(31. A cloth cutting machine including a knife, a standard carrying said knife, n.

meanse member mounted on said standard and havinge portion movable toward and from said knife and :1 pair of brushes independently carried by said member, one brush and one grinder adapted to lie at each side of said knife uponthe movement of said member to operative position, said grinders being adjustable. about apivot in the plane of the knife and said brushes being adjustable toward and from the plane 10 of the knife.

Signed at New York city, in the county of New York, and State of New York this litli day of June, A. I). 1915.

' DAVID PERLMAN. 'iinesses CLAIR W, FAIRBANK,

FLORENCE LEVIEN. 

